摘要:
A low temperature CVD process using a tris (&bgr;-diketonate) bismuth precursor for deposition of bismuth ceramic thin films suitable for integration to fabricate ferroelectric memory devices. Films of amorphous SBT can be formed by CVD and then ferroannealed to produce films with Aurivillius phase composition having superior ferroelectric properties suitable for manufacturing high density FRAMs.
摘要:
Reduced diffusion of excess mobile specie from a metal oxide ceramic is achieved by tailoring the composition an/or deposition parameters. A barrier layer which reacts with the excess mobile specie is provided below the metal oxide ceramic to prevent or reduce the diffusion of the excess mobile specie through the bottom electrode and into the substrate.
摘要:
A solvent composition useful for liquid delivery MOCVD, comprising toluene and a Lewis base, wherein toluene is present at a concentration of from about 75% to about 98% by volume, based on the total volume of toluene and the Lewis base. Such solvent composition is usefully employed to dissolve or suspend precursors therein for liquid delivery MOCVD, e.g., MOCVD of ferroelectric material films such as SBT.
摘要:
A low temperature CVD process using a tris (&bgr;-diketonate) bismuth precursor for deposition of bismuth ceramic thin films suitable for integration to fabricate ferroelectric memory devices. Films of amorphous SBT can be formed by CVD and then ferroannealed to produce films with Aurivillius phase composition having superior ferroelectric properties suitable for manufacturing high density FRAMs.
摘要:
Silicon precursors for forming silicon films. Hexacoordinated silicon beta-diketonate compositions are described, of the formula R2Si(-diketonate)2 or (RO)2Si(&bgr;-diketonate)2, wherein each R is the same as or different from the other R, and each R is independently selected from H, aryl, fluoroaryl, C1-C12 alkyl, C1-C12 fluoroalkyl and C1-C12 silicon-containing alkyl. The precursors are compatible with dopant co-precursors such as transition metal &bgr;-diketonate coordination complexes. The compositions enable low temperature (e.g.,
摘要:
Apparatus and method for determination of the endpoint of a cleaning process in which cleaning fluid is contacted with a structure to effect cleaning thereof. The cleaning process includes contacting a cleaning fluid with a structure to be cleaned and producing a cleaning effluent having a sensible heat thermal energy characteristic corresponding to extent of cleaning of the structure, disposing an object in the cleaning effluent that interacts with the cleaning effluent to produce a response indicative of the sensible heat thermal energy characteristic of the cleaning effluent, and monitoring such response to determine when the cleaning is completed. An endpointing algorithm and endpoint monitoring are also described, as well as endpoint monitor sensor elements that are useful to determine endpoint conditions in an efficient and reproduceable manner.
摘要:
A non-volatile memory cell wherein the capacitor comprises a Bi-based metal oxide having a crystallographic texture to produce high switchable polarization.
摘要:
A method of improving the physical and/or electrical and/or magnetic properties of a thin film material formed on a substrate, wherein the properties of the thin film material are stress-dependent, by selectively applying force to the substrate during the film formation and/or thereafter during the cooling of the film in the case of a film formed at elevated temperature, to impose through the substrate an applied force condition opposing or enhancing the retention of stress in the product film. The method of the invention has particular utility in the formation of ferroelectric thin films which are grown at temperature above the Curie temperature, and which may be placed in tension during the cooling of the film to provide ferroelectric domains with polarization in the plane of the film.
摘要:
An integrated circuit barrier structure disposed between high dielectric constant metal oxide and Cu or Al electrodes, for preventing diffusion of species such as oxygen, bismuth, or lead from the high dielectric constant metal oxide into the Cu or Al electrodes. Such barrier structure also protects the Cu or Al electrodes against oxidization during deposition of the high dielectric constant metal oxide. The barrier structure can be formed as (1) a single layer of Pt, Ir, IrO2, Ir2O3, Ru, RuO2, CuO, Cu2O, Al2O3, or a binary or ternary metal nitride, e.g., TaN, NbN, HfN, ZrN, WN, W2N, TiN, TiSiN, TiAlN, TaSiN, or NbAlN, or (2) double or triple layers of such materials, e.g., Pt/TiAlN, Pt/IrO2, Pt/Ir, Ir/TiAlN, Ir/IrO2, IrO2/TiAlN, IrO2/Ir, or IrO2/Ir2O3/Ir. Such barrier structures enable Cu or Al electrodes to be used in combination with high dielectric constant metal oxides in microelectronic structures such as ferroelectric stack and trench capacitors, non-volatile ferroelectric memory cells, and dynamic random access memory (DRAM) cells.
摘要:
A method of improving the physical and/or electrical and/or magnetic properties of a thin film material formed on a substrate, wherein the properties of the thin film material are stress-dependent, by selectively applying force to the substrate during the film formation and/or thereafter during the cooling of the film in the case of a film formed at elevated temperature, to impose through the substrate an applied force condition opposing or enhancing the retention of stress in the product film. The method of the invention has particular utility in the formation of ferroelectric thin films which are grown at temperature above the Curie temperature, and which may be placed in tension during the cooling of the film to provide ferroelectric domains with polarization in the plane of the film.